The NanoProlog package

This package was developed to demonstrate the ideas behind
the Prolog language. It contains a very small interpreter
(Language.Prolog.Nanoprolog) which can be run on its
own. It reads a file with definitions, and then prompts
for a goal. All possibe solutions are printed, preceded by
a tree showing which rules were applied in which order.

The file royals.pro contains a description of part of the Dutch royal family, whereas the file
tc.pro shows unification at work in a very small type inferencer.